#6381AE
Closest named color: Off Blue (#5684AE). oklch(59.8% 0.077 258.3), rgb(99, 129, 174).
Aa
Black text reads best on this color (5.28:1).
About this color
#6381AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.077 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.016 away. Black text reads best on it, at 5.28:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.28:1 |
| White text | 3.97:1 |
Values
| HEX | #6381AE |
| RGB | rgb(99, 129, 174) |
| HSL | hsl(216, 32%, 54%) |
| OKLCH | oklch(59.8% 0.077 258.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #6381AE | 3.97:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #6381AE | 5.28:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #6381AE text on white | 3.97:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #6381AE text on black | 5.28:1 | AA | Lc -34.6 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D1DAE7
oklch(88.5% 0.02 257.5)
-
Step 300
300
#B2C2DA
oklch(81% 0.038 258.4)
-
Step 400
400
#8AA2C7
oklch(70.7% 0.061 258.9)
-
Step 500
500 (this color)
#6381AE
oklch(59.8% 0.077 258.3)
-
Step 600
600
#5474A4
oklch(55.5% 0.084 258.3)
-
Step 700
700
#45618D
oklch(49% 0.079 259.2)
-
Step 800
800
#395072
oklch(42.8% 0.064 258)
-
Step 900
900
#31425C
oklch(37.6% 0.05 258.7)
-
Step 950
950
#1D2736
oklch(27% 0.031 258.3)
#6381AE with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #7084B0 | 0.020 |
| Deuteranopia (no green cones) | #687CAD | 0.014 |
| Tritanopia (no blue cones) | #488B90 | 0.069 |
| Achromatopsia (no color) | #808080 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6381AE
#6381AE
oklch(59.8% 0.077 258.3)
- #997A48
#997A48
oklch(59.8% 0.078 78.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #6381AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.016
- Dusty Blue #5A86AD ΔE 0.017
- Cool Blue #4984B8 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.031
- Faded Blue #658CBB ΔE 0.033
- Stormy Blue #507B9C ΔE 0.040
- Lavender Gray #7E7F9A ΔE 0.045
- Silver Lake Blue #778DA9 ΔE 0.047
Use #6381AE in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.